ASTM D3700 - 12

    Standard Practice for Obtaining LPG Samples Using a Floating Piston Cylinder

    Active Standard ASTM D3700 | Developed by Subcommittee: D02.H0

    Book of Standards Volume: 05.01


    Buy Standard (PDF)
    11 pages
    $48.00
    Buy Standard (Print)
    11 pages
    $48.00
    Buy Standard + Redline (PDF)
    22 pages
    $57.60

    Historical (view previous versions of standard)

    Translated Standard: Russian
    more info


    ASTM D3700

    Significance and Use

    5.1 This practice allows the collection of a representative sample of LPG that may contain trace volatile dissolved components such as methane, ethane, and nitrogen. Sampling by Practice D1265 can result in a small, but predictable, loss of these lighter components. Practice D1265 is suitable for collecting samples for routine specification testing, as the small loss of light components is not significant under Specification D1835 specification requirements. Practice D3700 is recommended whenever highly accurate determination of light components is required. For example, compositions determined on samples collected according to Practice D3700 may be used to establish the product value of NGL mixtures (see Appendix X1).

    1. Scope

    1.1 This practice covers the equipment and procedures for obtaining a representative sample of specification liquefied petroleum gas (LPG), such as specified in ASTM Specification D1835, GPA 2140, and comparable international standards. It may also be used for other natural gas liquid (NGL) products that are normally single phase (for example, NGL mix, field butane, and so forth), defined in other industry specifications or contractual agreements.

    1.2 This practice is not intended for non-specification products that contain significant quantities of undissolved gases (N2, CO2), free water or other separated phases, such as raw or unprocessed gas/liquids mixtures and related materials. The same equipment can be used for these purposes, but additional precautions are generally needed to obtain representative samples of multi-phase products (see Appendix X1).

    1.3 This practice includes recommendations for the location of a sample point in a line or vessel. It is the responsibility of the user to ensure that the sampling point is located so as to obtain a representative sample.

    1.4 The values stated in SI units are to be regarded as standard. The values given in parentheses are for information only.

    1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices, and determine the applicability of regulatory limitations prior to use.


    2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

    ASTM Standards

    D1265 Practice for Sampling Liquefied Petroleum (LP) Gases, Manual Method

    D1835 Specification for Liquefied Petroleum (LP) Gases

    GPA Standards

    GPA2140 Liquefied Petroleum Gas Specifications and Test Methods

    GPA2174 Obtaining Liquid Hydrocarbon Samples for Analysis by Gas Chromatography


    ICS Code

    ICS Number Code 75.120 (Hydraulic fluids)

    UNSPSC Code

    UNSPSC Code 15111510(Liquified petroleum gas)


    DOI: 10.1520/D3700-12

    ASTM International is a member of CrossRef.

    ASTM D3700

    Citing ASTM Standards
    Back to Top